Ermin, Juxtanodin, JN, cytoskeletal rearrangement, myelinogenesis, myelin sheath, oligodendroglia maturation, myelin/Ranvier node formation, CNS development, mature CNS, oligodendrocyte, brain, spinal cord, myelination, mature nerves, outer cytoplasmic lip, myelin sheath, paranodal loops, cytoplasm, cytoskeleton, actin-binding, morphogenesis, actin filament, cell shape, myelin sheath, neuronal cell body, and actin filament binding